ON a sunny morning in Kathmandu, hundreds of newly minted entrepreneurs are converging for the annual conference of Tupperware, the $1.2-billion plastic containers multinational. An unusual business conference this. More silk sarees here than neckties, delicate perfumes rather than the aroma of coffee and cigarettes. No brainstorming sessions on strategy, marketing and consumer psychographs. Instead, boisterous spirits, more reminiscent of a high school reunion than a business meet. Uninhibited display of camaraderie and spontaneity.